Uninterruptible power supply



FIG. 1 is a front, top and right side perspective view of an uninterruptible power supply, showing our new design;

FIG. 2 is an enlarged fragmentary perspective view of the front side thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a left side elevational view thereof;

FIG. 9 is an enlarged cross-sectional view thereof, taken along line 9—9 of FIG. 3, with the internal system omitted; and,

FIG. 10 is an enlarged cross-sectional view thereof, taken along line 10—10 of FIG. 3, with the internal system omitted. 

The ornamental design for an uninterruptible power supply, as shown and described. 